Development and Deployment of an Infrasound Sensor System with Tornado Chasers

Evidence suggests that during tornadogenesis and through the life of a tornado, acoustic waves at frequencies below human hearing (i.e. infrasound) are produced. To date, interpretation of these sounds has been hindered by the lack of observations. Thus, our team designed and built the Ground-based Local Infrasound Data Acquisition (GLINDA) system in 2019 to deploy with storm chasers. The current work is the development of version 2 of GLINDA (GLINDA 2.0) with the aim of reducing its footprint, improving automated operation stability, and reducing the cost to enable broader distribution of the sensor packages. This presentation will report on the system improvements and insights gained during development. In addition, preliminary data from a deployment of GLINDA 2.0 with storm chasers in April of 2022 will be shown, which includes recordings during an interception of an EF3 tornado on 29 April 2022 in Andover, KS.